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NetBeans uses a single line JTextField for values like VM options. But it is difficult to take a glance over your input and locate something you want to edit when your input is more than 1 line. I think JTextArea should be the default style if the input might be considered as multi-line. JTextField should be ONLY accepted when simple input in a single-line. I raised an issue about Maven plugin's VM options, but it seems to be a common issue all over.
Created attachment 75586 [details] VM arguments setting in Eclipse - I can easily find out errors in my input
Created attachment 75587 [details] VM arguments setting in NB-dev - I can not find out errors in my input unless I copy it to Notepad
Passing to java|project - please evaluate. Thanks.